diff --git a/benchmark/buffers/buffer-read-float.js b/benchmark/buffers/buffer-read-float.js
index afd9edf5578308..e105642972d857 100644
--- a/benchmark/buffers/buffer-read-float.js
+++ b/benchmark/buffers/buffer-read-float.js
@@ -2,15 +2,13 @@
 const common = require('../common.js');
 
 const bench = common.createBenchmark(main, {
-  noAssert: ['false', 'true'],
   type: ['Double', 'Float'],
   endian: ['BE', 'LE'],
   value: ['zero', 'big', 'small', 'inf', 'nan'],
   millions: [1]
 });
 
-function main({ noAssert, millions, type, endian, value }) {
-  noAssert = noAssert === 'true';
+function main({ millions, type, endian, value }) {
   type = type || 'Double';
   const buff = Buffer.alloc(8);
   const fn = `read${type}${endian}`;
@@ -31,11 +29,11 @@ function main({ noAssert, millions, type, endian, value }) {
     },
   };
 
-  buff[`write${type}${endian}`](values[type][value], 0, noAssert);
+  buff[`write${type}${endian}`](values[type][value], 0);
 
   bench.start();
   for (var i = 0; i !== millions * 1e6; i++) {
-    buff[fn](0, noAssert);
+    buff[fn](0);
   }
   bench.end(millions);
 }
diff --git a/benchmark/buffers/buffer-read-with-byteLength.js b/benchmark/buffers/buffer-read-with-byteLength.js
index 9fe5e6f4bf43ff..1858c4fd965e26 100644
--- a/benchmark/buffers/buffer-read-with-byteLength.js
+++ b/benchmark/buffers/buffer-read-with-byteLength.js
@@ -9,24 +9,21 @@ const types = [
 ];
 
 const bench = common.createBenchmark(main, {
-  noAssert: ['false', 'true'],
   buffer: ['fast', 'slow'],
   type: types,
   millions: [1],
-  byteLength: [1, 2, 4, 6]
+  byteLength: [1, 2, 3, 4, 5, 6]
 });
 
-function main({ millions, noAssert, buf, type, byteLength }) {
-  noAssert = noAssert === 'true';
-  type = type || 'UInt8';
+function main({ millions, buf, type, byteLength }) {
   const clazz = buf === 'fast' ? Buffer : require('buffer').SlowBuffer;
   const buff = new clazz(8);
-  const fn = `read${type}`;
+  const fn = `read${type || 'IntBE'}`;
 
-  buff.writeDoubleLE(0, 0, noAssert);
+  buff.writeDoubleLE(0, 0);
   bench.start();
   for (var i = 0; i !== millions * 1e6; i++) {
-    buff[fn](0, byteLength, noAssert);
+    buff[fn](0, byteLength);
   }
   bench.end(millions);
 }
diff --git a/benchmark/buffers/buffer-read.js b/benchmark/buffers/buffer-read.js
index 868f5cede8bd2d..88a46cb29079f6 100644
--- a/benchmark/buffers/buffer-read.js
+++ b/benchmark/buffers/buffer-read.js
@@ -19,22 +19,20 @@ const types = [
 ];
 
 const bench = common.createBenchmark(main, {
-  noAssert: ['false', 'true'],
   buffer: ['fast', 'slow'],
   type: types,
   millions: [1]
 });
 
-function main({ noAssert, millions, buf, type }) {
-  noAssert = noAssert === 'true';
+function main({ millions, buf, type }) {
   const clazz = buf === 'fast' ? Buffer : require('buffer').SlowBuffer;
   const buff = new clazz(8);
   const fn = `read${type || 'UInt8'}`;
 
-  buff.writeDoubleLE(0, 0, noAssert);
+  buff.writeDoubleLE(0, 0);
   bench.start();
   for (var i = 0; i !== millions * 1e6; i++) {
-    buff[fn](0, noAssert);
+    buff[fn](0);
   }
   bench.end(millions);
 }
diff --git a/benchmark/buffers/buffer-write.js b/benchmark/buffers/buffer-write.js
index 823e95bf15d704..42ea9aa093cb88 100644
--- a/benchmark/buffers/buffer-write.js
+++ b/benchmark/buffers/buffer-write.js
@@ -7,11 +7,15 @@ const types = [
   'UInt16BE',
   'UInt32LE',
   'UInt32BE',
+  'UIntLE',
+  'UIntBE',
   'Int8',
   'Int16LE',
   'Int16BE',
   'Int32LE',
   'Int32BE',
+  'IntLE',
+  'IntBE',
   'FloatLE',
   'FloatBE',
   'DoubleLE',
@@ -19,7 +23,6 @@ const types = [
 ];
 
 const bench = common.createBenchmark(main, {
-  noAssert: ['false', 'true'],
   buffer: ['fast', 'slow'],
   type: types,
   millions: [1]
@@ -28,9 +31,9 @@ const bench = common.createBenchmark(main, {
 const INT8 = 0x7f;
 const INT16 = 0x7fff;
 const INT32 = 0x7fffffff;
-const UINT8 = (INT8 * 2) + 1;
-const UINT16 = (INT16 * 2) + 1;
-const UINT32 = INT32;
+const INT48 = 0x7fffffffffff;
+const UINT8 = 0xff;
+const UINT16 = 0xffff;
 
 const mod = {
   writeInt8: INT8,
@@ -41,34 +44,57 @@ const mod = {
   writeUInt8: UINT8,
   writeUInt16BE: UINT16,
   writeUInt16LE: UINT16,
-  writeUInt32BE: UINT32,
-  writeUInt32LE: UINT32
+  writeUInt32BE: INT32,
+  writeUInt32LE: INT32,
+  writeUIntLE: INT8,
+  writeUIntBE: INT16,
+  writeIntLE: INT32,
+  writeIntBE: INT48
 };
 
-function main({ noAssert, millions, buf, type }) {
+const byteLength = {
+  writeUIntLE: 1,
+  writeUIntBE: 2,
+  writeIntLE: 4,
+  writeIntBE: 6
+};
+
+function main({ millions, buf, type }) {
   const clazz = buf === 'fast' ? Buffer : require('buffer').SlowBuffer;
   const buff = new clazz(8);
   const fn = `write${type || 'UInt8'}`;
 
-  if (/Int/.test(fn))
-    benchInt(buff, fn, millions, noAssert);
+  if (!/\d/.test(fn))
+    benchSpecialInt(buff, fn, millions);
+  else if (/Int/.test(fn))
+    benchInt(buff, fn, millions);
   else
-    benchFloat(buff, fn, millions, noAssert);
+    benchFloat(buff, fn, millions);
+}
+
+function benchInt(buff, fn, millions) {
+  const m = mod[fn];
+  bench.start();
+  for (var i = 0; i !== millions * 1e6; i++) {
+    buff[fn](i & m, 0);
+  }
+  bench.end(millions);
 }
 
-function benchInt(buff, fn, millions, noAssert) {
+function benchSpecialInt(buff, fn, millions) {
   const m = mod[fn];
+  const byte = byteLength[fn];
   bench.start();
   for (var i = 0; i !== millions * 1e6; i++) {
-    buff[fn](i & m, 0, noAssert);
+    buff[fn](i & m, 0, byte);
   }
   bench.end(millions);
 }
 
-function benchFloat(buff, fn, millions, noAssert) {
+function benchFloat(buff, fn, millions) {
   bench.start();
   for (var i = 0; i !== millions * 1e6; i++) {
-    buff[fn](i, 0, noAssert);
+    buff[fn](i, 0);
   }
   bench.end(millions);
 }
diff --git a/test/sequential/test-benchmark-buffer.js b/test/sequential/test-benchmark-buffer.js
index f5e0c692f367be..4eb4415a61dd7f 100644
--- a/test/sequential/test-benchmark-buffer.js
+++ b/test/sequential/test-benchmark-buffer.js
@@ -16,7 +16,6 @@ runBenchmark('buffers',
                'millions=0.000001',
                'method=',
                'n=1',
-               'noAssert=true',
                'pieces=1',
                'pieceSize=1',
                'search=@',